diff --git a/CMakeLists.txt b/CMakeLists.txt
index 75daf019..582fdfc9 100755
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -71,6 +71,7 @@ add_subdirectory(tools/uniter EXCLUDE_FROM_ALL)
 add_custom_command(
   OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/cista.h
   COMMAND uniter
+    ${CMAKE_CURRENT_SOURCE_DIR}/LICENSE
     ${CMAKE_CURRENT_SOURCE_DIR}/include
     ${CMAKE_CURRENT_SOURCE_DIR}/include/cista/mmap.h
     ${CMAKE_CURRENT_SOURCE_DIR}/include/cista/serialization.h
diff --git a/LICENSE b/LICENSE
index e76e2c49..495d1410 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2018 Felix Gündling
+Copyright (c) 2018-2021 Felix Gündling
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/tools/uniter/uniter.cc b/tools/uniter/uniter.cc
index f6a1798d..dcf05d5e 100644
--- a/tools/uniter/uniter.cc
+++ b/tools/uniter/uniter.cc
@@ -40,15 +40,26 @@ void write_file(std::string const& include_path, std::string const& path,
 }
 
 int main(int argc, char const** argv) {
-  if (argc < 3) {
-    printf("usage: %s include_path file0, [file1, [file2, ...]]\n", argv[0]);
+  if (argc < 4) {
+    printf("usage: %s license include_path file0, [file1, [file2, ...]]\n", argv[0]);
     return 1;
   }
 
-  auto const include_path = std::string{argv[1]};
-  std::set<std::string> included;
+  auto const license_path = std::string{argv[1]};
+  auto const include_path = std::string{argv[2]};
+
+  std::cout << "/*\n";
+  std::ifstream f{license_path.c_str()};
+  f.exceptions(std::ifstream::failbit | std::ifstream::badbit);
+  std::string line;
+  while (!f.eof() && f.peek() != EOF && std::getline(f, line)) {
+    std::cout << line << "\n";
+  }
+  std::cout << "*/\n\n";
+
   std::cout << "#pragma once\n\n";
-  for (int i = 2; i < argc; ++i) {
+  std::set<std::string> included;
+  for (int i = 3; i < argc; ++i) {
     write_file(include_path, argv[i], included);
   }
 }
\ No newline at end of file